High idle

Seattle, WA

#1 Feb 17, 2011
Our van will stay at a higher idle after accelertating. Like in stop and go traffic, this makes the brakes work harder and gives us about 13 MPG for around town. I just replaced the injectors with the newer spider type. After cruising speed and releasing the throttle to go down a hill the engine will not return to low idle, but when I shift to neutral it will drop to low idle. Any ideas?

Seattle, WA

#3 Apr 15, 2011
i have a 92 that dos the same thing

Barrie, Canada

#4 Apr 23, 2011
it is your throttle position sensor or idle position sensor or both have it coded to find out which one hope this helps

Little Rock, AR

#5 Aug 29, 2011
I also have this problem on a '97 Astro and would like to know if you have found an answer. I had an '89 Cadillac Deville that did this and it was an idle speed control motor. Not sure if the astro has one.

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